Question

Explain these line...
No spam...
"Its not possible to have situation in which speed of the particle is never zero but the average speed in an interval is zero"
"It is not possible to have a situation in which the speed of a particle is always zero but the average speed is not zero"​

Answer 1

Hello,

1) it is saying that :-

speed not equal 2 zero

but

average speed ( which is mentioned below) is zero.

$average \: speed \: = \frac{total \: distnce}{total \: time}$

solution :- no it is not possible

2) speed = 0

but

average speed not equal to zero.

solution :- this is also not possible !

( in both cases we hv to make one as -ve to get zero but sine speed is scaler it is not possible so 4 both it is not possible )

i hope u understood ..